bugfix: Normalize identifier usage for table names (#4045)

* fix normalize identifier for table names

* add tests for case sensitive table operations

Author: Mr-Destructive

internal/endtoend/testdata/ddl_alter_table_case_sensitivity/sqlite/go/db.go

@@ -0,0 +1,7 @@
+-- name: InsertUser :exec
+INSERT INTO Users (full_name, "EmailAddress", created_at)
+VALUES (?, ?, ?);
+
+-- name: SelectUsers :many
+SELECT id, full_name, "EmailAddress", created_at
+FROM Users;

internal/endtoend/testdata/ddl_alter_table_case_sensitivity/sqlite/go/models.go

@@ -0,0 +1,10 @@
+-- Test ALTER TABLE operations with mixed case table and column names
+-- Verifies consistent handling of case sensitivity in DDL operations
+CREATE TABLE Users (id integer primary key, name text, "Email" text);
+
+-- Test renaming columns with different case formats
+ALTER TABLE Users RENAME COLUMN name TO full_name;
+ALTER TABLE Users RENAME COLUMN "Email" TO "EmailAddress";
+
+-- Test adding a simple column
+ALTER TABLE Users ADD COLUMN created_at text;

internal/endtoend/testdata/ddl_alter_table_case_sensitivity/sqlite/go/query.sql.go

@@ -0,0 +1,12 @@
+{
+  "version": "1",
+  "packages": [
+    {
+      "path": "go",
+      "engine": "sqlite",
+      "name": "querytest",
+      "schema": "schema.sql",
+      "queries": "query.sql"
+    }
+  ]
+}

internal/endtoend/testdata/ddl_alter_table_case_sensitivity/sqlite/query.sql

@@ -1,2 +1,8 @@
 CREATE TABLE venues (hi text);
-DROP TABLE venues;
+DROP TABLE venues;
+
+CREATE TABLE Authors (id integer);
+DROP TABLE Authors;
+
+CREATE TABLE "Books" (id integer);
+DROP TABLE "Books";